# VimでBad Apple!!
こんにちわ。 ゴリラ.vim (opens new window)を運営しているゴリラ (opens new window)です。
最近Vimのプラグインを作るのにハマっています。先日もdocker.vim (opens new window)というVimからdockerコンテナを操作するプラグインを作りました。 良かった試してみてください。
さて、本題ですがみなさんはBad Apple!!をご存知でしょうか？
多分ニコニコユーザならほぼ知っているのではないかと思います。
そうです。かの有名な動画です。
その動画のAscii版があり、それならVimで再生できるのでは？と思い帰りの電車の中で作ってみました。
# どんな感じ？
こんな感じです。 すこしちらつきますが、まぁ見れなくはないかなと言った感じです。
# 仕組みは？
とっても簡単です。簡潔に言うとテキストファイルを読み込み、フレーム分のテキストを配列に格納して、あとはfor分で回して画面に描写します。
もう少し細かく解説します。
# Asciiテキストファイルの読み込み
Bad Apple!のAsciiテキストファイルはこちら (opens new window)にあるので、それを借用しました。
テキストファイル
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見て分かる通り、SPLITで区切っています。なので、SPLITまでを1フレームとしてます。
処理は次になります。
" read file to create frames
function! s:read_file() abort
let file = globpath(&rtp, 'resources/badapple.txt')
" 全frameを格納
let frames = []
" 1frame分のテキストを格納
let frame = []
for line in readfile(file)
" 現在行に`SPLIT`が含まれていなければframeに追加
if line !~# "SPLIT"
call add(frame, line)
else
" frameをframes追加
call add(frames, frame)
let frame = []
endif
endfor
return frames
endfunction
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なぜframeを配列にしているかというと、vimではバッファにテキストを書き込むsetline()とpopup windowのバッファに書き込むpopup_settext()という関数がありますが、
引数に配列を渡すと配列の1要素が1行として画面に出力します。そうすることで改行文字をわざわざ追加しなくて済むのでコードがスッキリします。
# 画面に出力する
フレームを作る関数を用意したので、それを使用してフレーム情報を変数に格納し、forで1frameずつ画面に出力します。
for frame in frames
" ここで画面にframeを出力する
call popup_settext(winid, frame)
" redraw!で画面を再描写する"
redraw!
" 一瞬で出力が終わってしまうので少し待つ
sleep 50ms
" qで終了できるように`getchar()`で入力した文字を取得
" キー入力を待たないように、引数に`0`を渡す
let key = getchar(0)
if key ==# 113
break
endif
endfor
" for分を抜けたらウィンドウを閉じる"
call popup_close(winid)
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# まとめ
動画をAsciiテキストに変換して、フレームを定義すれば、どんなものでも同じようなロジックでVim再生できます。 興味ある方はぜひチャレンジしてみてください。